Dossel forrageiro de cultivares de aveia certificadas e salvas em integração lavoura-pecuária

Abstract

The objective of this work was to evaluate the morphological characteristics and forage production in the canopy of forage oat cultivars derived from certified seeds, commercialized in the region of Pato Branco, and from a cultivar, whose seed was saved by the rural producer. The work was carried out on a rural property in the municipality of Vitorino - PR from April to October 2022, carrying out agronomic and forage evaluations of forage oat cultivars with certified seeds (AF 1340, BAGUAL and BRS 139) and a cultivar saved by rural producer. The design was completely randomized, with four replications. The animals entered for grazing when the oats reached a height of 20 to 30 cm, using the continuous stocking grazing method with variable stocking rate. During the development of the crop, the following variables were evaluated: number of emerged plants per m² (NPE m²), tiller population density (DPP), forage dry matter accumulated in different periods (MASP) (Period 1: 06/13-11 /07/2022; Period 2: 07/11-08/08/2022; Period 3: 08/08-09/05/2022; and, Period 4: 09/05-10/03/2022), dry matter of average forage in exclusion cages (MSFMG), leaf/stem ratio in the grazed area (F/CAP) and forage density (DF). animal. White oats (AF1340 and BAGUAL) should be preferred by the farmer when the choice is animal feed. Any of the cultivars studied can be used effectively when the objective is the production of dry matter for soil cover. Saving seeds can be a good option when the rural producer needs oat plants only for the purpose of covering the soil.